Bulletin No. PSAFP- A
Drawing No. LP0589
Released 03/13
Tel +1 (717) 767-6511
Fax +1 (717) 764-0839
www.redlion.net
“FLAT PACK” RECTANGULAR INDUCTIVE PROXIMITY SENSORS





IDEAL FOR LIMITED SPACE APPLICATIONS
SENSE FERROUS & NON-FERROUS METAL OBJECTS TO
“ZERO SPEED”
3-WIRE NPN TRUE OPEN COLLECTOR OUTPUTS
2 SIZES & SENSING DISTANCES FOR APPLICATION
VERSATILITY
L.E.D. TARGET INDICATOR
DESCRIPTION & OPERATION
These Inductive Proximity Sensors have a maximum sensing distance of
0.078" (2 mm) and 0.393" (10 mm) respectively, and operate over a wide power
supply range (See Specifications Below). They are each housed in plastic with
a top active face. The NPN transistor outputs are true open collector and are
compatible with most Red Lion counter and rate meter input circuits. Maximum
sensing frequencies are 2 KHz and 500 Hz respectively. In addition, the outputs
are overload and short circuit protected. These sensors are shielded for flush
mounting in metal applications.
METAL
TARGET
Inductive Proximity Sensors detect the presence of metal objects that come
within range of their oscillating field and provide target detection to “zero
speed”. Internally, an oscillator creates a high frequency electromagnetic field
(RF) that is radiated from the coil and out from the sensor face (See Figure 1).
When a metal object enters this field, eddy currents are induced into the object.
As the metal moves closer to
the sensor, these eddy currents
increase and result in an absorption
OSC.
of energy from the coil that
CIRCUIT
dampens the oscillator amplitude
until it finally stops.
PSAFP1 AND PSAFP2 SPECIFICATIONS
PSAFP100
1. Power Supply:
SENSING FIELD
PSAFP200
+10 to +30 VDC
@ 15 mA max.
REVERSE POLARITY PROTECTION
TARGET APPROACHING
SENSOR
AMPLITUDE
2. Maximum Switching Frequency:
3. Output:
OSCILLATOR STALLED
TARGET PRESENT
OUTPUT ON
TARGET ABSENT
OUTPUT OFF
5. Wire Color Code:
In addition to the coil and oscillator circuit, the 3-wire Models PSAFP1 and
PSAFP2 each contain a Detector Circuit and NPN Transistor Output (See
Figure 2). In these units, the Detector Circuit senses when the oscillator stops,
and turns on the Output Transistor that controls the load. The Detector Circuit
also turns on an integrally case mounted L.E.D., visually indicating when a
metal object is sensed.
0.393" (10 mm)
-25° to +70°C
(-14° to +158°F)
NEMA 1, 3, 4, 6, 13 and IEC IP 67
8. Trigger Current for Overload Protection:
170 mA
220 mA
TYPICAL COUNTER
INPUT SWITCH SET-UP
+12V
COMMON = BLU
Figure 2
COMM.
CNT.
LED STATES
LED ON (GREEN) POWER ON
LED ON (YELLOW) OUTPUT ENERGIZED
LED ON (FLASHING GREEN) SHORT CIRCUIT WARNING
1
1
LO BIAS
COMMON
BLUE
OUTPUT = BLK
LO FRQ
NPN OPEN
COLLECTOR
SRC
OUTPUT TRANSISTOR
+VDC = BRN
PSAFP1, PSAFP2
OUTPUT
BLACK
2
3
*
HI
DETECTOR
+VDC
BROWN
HI
METAL
TARGET
0.078" (2 mm)
TYPICAL HOOKUP
LED
OSC.
CIRCUIT
VSAT = 1.8 V @
200 mA max. load
-25° to +85°C
(-14° to +185°F)
7. Construction:
PSAFP1 and PSAFP2
COIL
VSAT = 1.8 V @
150 mA max. load
Brown = +VDC; Blue = Common;
Black = Output
6. Operating Temperature:
MODELS PSAFP1 & PSAFP2
500 Hz
NPN Open Collector Output,
Overload and Short Circuit protected.
4. Maximum Sensing Distance:
Figure 1
2 KHz
SNK
TARGET
ABSENT
* APPLICATION
DEPENDENT
SELECTION & APPLICATION OF PROXIMITY
SENSORS
DIMENSIONS In inches (mm)
PSAFP100
0.315 (8.0)
0.217 (5.5)
LED
0.315 (8.0)
0.118 (3.0)
0.630 (16.0)
1.102 (28.0)
0.236 (6.0)
Ø 0.126 (Ø 3.2) THRU
Ø 0.252 (Ø 6.4) x90°
PSAFP200
2.047 (52.0)
Selection of the proper proximity sensor depends on the size, material, and
spacing of the target being sensed and the sensing distance that can be
maintained. The maximum sensing distance is defined as the distance when the
sensor is just close enough to detect a ferrous target whose diameter is equal to
or greater than the sensor diameter. In actual application, the sensing distance
should be between 50 to 80% of the maximum sensing range to assure reliable
detection. For target sizes smaller than the sensor diameter, the maximum
sensing distance can be estimated from the curve (See Figure 3). A further
reduction factor must also be applied if the target material is non-ferrous metal
(See Figure 4). Ideally, spacing between adjacent targets should be at least one
sensor diameter so that the first target completely leaves the sensors field before
the next target appears. Individual targets can still be resolved as separate
objects if this spacing is reduced to 70 or 75% of the sensor diameter, however,
this can introduce a minimum limit on sensing distance that makes adjustment
more critical. All proximity sensors are internally shielded which allows the
sensor face to be flush mounted in metal applications without reducing sensing
distance. In applications where proximity sensors must be placed next to each
other, a distance of at least 1 sensor diameter should separate sensors to
eliminate any frequency interference (See Mounting below).
MAXIMUM SENSING DISTANCE REDUCTION FACTORS
1.181 (30.0)
Reduction in the maximum sensing
distance due to decrease in diameter
of ferrous targets.
0.551(14.0)
Typical reduction factors for various nonferrous targets with diameters equal to or
greater than sensor diameter.
Ø 0.177 (Ø 4.5) 2x
0.197 (5.0)
% OF MAX. SENSING DISTANCE
1.260 (32.0)
MILD STEEL
100%
STAINLESS
STEEL
APPROX. 65%
APPROX. 60%
MERCURY
50
APPROX. 50%
LEAD
APPROX. 40%
BRASS
APPROX. 30%
ALUMINUM
0
0
Notes:
1. PSAFP100 Housing: Plastic, PA12-GF30
Cable: 2 meter standard length
2. PSAFP200 Housing: Plastic, PBT-GF30-VO
Cable: 2 meter standard length
% SENSING DISTANCE
MATERIAL
100
0.315 (8.0)
0.787 (20.0)
.25
RATIO,
.5
.75
APPROX. 25%
COPPER
1
TARGET DIAMETER
SENSOR DIAMETER
Nominal sensing range x % sensing
distance = actual sensing range
Figure 3
Figure 4
PSAFP200 MOUNTING
PSAFP100 and PSAFP200 outputs are NPN open collector outputs. A
PSAFP100 and PSAFP200 may be used as an input to more than 1
indicator or control only if the respective power supplies of each unit
are “unregulated” and can load share. It is recommended to use only
one power supply for sensor power. An indicator or control with a
regulated power supply may not be paralleled.
COUNTER #1
COMM.
CNT.
NPN OPEN
COLLECTOR
+VDC (BRN)
OUTPUT (BLK)
COMMON (BLU)
2
3
*
* APPLICATION
DEPENDENT
COUNTER #2
TYPICAL COUNTER
INPUT SWITCH SET-UP
+12V
COMM.
CNT.
SRC
LO FRQ
LO BIAS
PSAFP1 and PSAFP2
1
SNK
HI
HI
+12V
1
2
3
*
SNK
HI
HI
Counter #1 and #2 both contain
unregulated +12 VDC Power
Supplies.
SRC
LO FRQ
LO BIAS
TYPICAL COUNTER
INPUT SWITCH SET-UP
* APPLICATION
DEPENDENT
A
B
C
D
E
30.00 mm
45.00 mm
30.00 mm
30.00 mm
60.00 mm
MODELS MB7 & MB8 MOUNTING ACCESSORIES FOR PSAFP200
MB700000

MOUNTING SPACER

FOR MOUNTING WITH ACTIVE FACE DOWNWARDS

METAL, Cu2n

MOUNTING BRACKET

STAINLESS STEEL: VA 1.4301
MB800000
The Model MB7 and MB8 mounting accessories are designed to provide easy mounting and adjustment of the PSAFP200.
ORDERING INFORMATION
MODEL NO.
DESCRIPTION
PART NUMBER
PSAFP1
2 mm Flat Pack Rectangular Proximity Sensor
PSAFP100
PSAFP2
10 mm Flat Pack Rectangular Proximity Sensor
PSAFP200
MB7
Spacer for PSAFP200
MB700000
MB8
Mounting Bracket for PSAFP200
MB800000
Do not dispose of unit in trash - Recycle
LIMITED WARRANTY
The Company warrants the products it manufactures against defects in materials and
workmanship for a period limited to two years from the date of shipment, provided the products
have been stored, handled, installed, and used under proper conditions. The Company’s liability
under this limited warranty shall extend only to the repair or replacement of a defective product, at
The Company’s option. The Company disclaims all liability for any affirmation, promise or
representation with respect to the products.
The customer agrees to hold Red Lion Controls harmless from, defend, and indemnify RLC
against damages, claims, and expenses arising out of subsequent sales of RLC products or products
containing components manufactured by RLC and based upon personal injuries, deaths, property
damage, lost profits, and other matters which Buyer, its employees, or sub-contractors are or may be
to any extent liable, including without limitation penalties imposed by the Consumer Product Safety
Act (P.L. 92-573) and liability imposed upon any person pursuant to the Magnuson-Moss Warranty
Act (P.L. 93-637), as now in effect or as amended hereafter.
No warranties expressed or implied are created with respect to The Company’s products except
those expressly contained herein. The Customer acknowledges the disclaimers and limitations
contained herein and relies on no other warranties or affirmations.
Red Lion Controls
Headquarters
20 Willow Springs Circle
York PA 17406
Tel +1 (717) 767-6511
Fax +1 (717) 764-0839
Red Lion Controls
Europe
Softwareweg 9
NL - 3821 BN Amersfoort
Tel +31 (0) 334 723 225
Fax +31 (0) 334 893 793
Red Lion Controls
India
201-B, 2nd Floor, Park Centra
Opp 32 Mile Stone, Sector-30
Gurgaon-122002 Haryana, India
Tel +91 984 487 0503
Red Lion Controls
China
Unit 302, XinAn Plaza
Building 13, No.99 Tianzhou Road
ShangHai, P.R. China 200223
Tel +86 21 6113 3688
Fax +86 21 6113 3683